Math
Ledger Lock
Ledger Lock is a daily number-logic puzzle. Toggle cells on the grid so every row and column adds up to its target sum — but no two selected cells can be adjacent. One unique solution each day, with streak tracking and shareable results.
Each date on DLE Directory highlights one daily puzzle worth trying. For Sunday, August 23, 2026, we are introducing Ledger Lock — a math DLE that usually takes 3–10 min.
Ledger Lock is a daily number-logic puzzle. Toggle cells on the grid so every row and column adds up to its target sum — but no two selected cells can be adjacent. One unique solution each day, with streak tracking and shareable results.
